The 55 cm TRNR Gym Ball is a must-have training tool, delivering greater core strength, balance, coordination, range of motion, joint stability, and postural alignment. By adding instability to your workouts, your deep...

Add the TRNR Balance Trainer to your training arsenal for a workout that is guaranteed to challenge you. This versatile piece of equipment can be used for core training, balance, whole-body strengthening,...

The 65 cm TRNR Gym Ball is a must-have training tool, delivering greater core strength, balance, coordination, range of motion, joint stability, and postural alignment. By adding instability to your workouts, your...

The 75 cm TRNR Gym Ball is a must-have training tool, delivering greater core strength, balance, coordination, range of motion, joint stability, and postural alignment. By adding instability to your workouts, your...